1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | |
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15 | package de.ugoe.cs.autoquest.usability; |
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16 | |
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17 | import java.util.Collection; |
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18 | import java.util.HashMap; |
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19 | import java.util.LinkedList; |
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20 | import java.util.List; |
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21 | import java.util.Map; |
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22 | |
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23 | import org.apache.commons.math3.stat.descriptive.DescriptiveStatistics; |
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24 | |
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25 | import de.ugoe.cs.autoquest.tasktrees.treeifc.DefaultTaskInstanceTraversingVisitor; |
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26 | import de.ugoe.cs.autoquest.tasktrees.treeifc.DefaultTaskTraversingVisitor; |
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27 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTask; |
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28 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTaskInstance; |
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29 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
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30 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
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31 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance; |
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32 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskModel; |
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33 | |
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34 | /** |
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35 | * TODO comment |
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36 | * |
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37 | * @version $Revision: $ $Date: 16.07.2012$ |
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38 | * @author 2012, last modified by $Author: pharms$ |
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39 | */ |
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40 | public class RequiredInefficientActionsRule implements UsabilityEvaluationRule { |
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41 | |
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42 | /* |
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43 | * (non-Javadoc) |
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44 | * |
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45 | * @see de.ugoe.cs.usability.UsabilityEvaluationRule#evaluate(TaskTree) |
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46 | */ |
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47 | @Override |
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48 | public UsabilityEvaluationResult evaluate(ITaskModel taskModel) { |
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49 | UsabilityEvaluationResult results = new UsabilityEvaluationResult(taskModel); |
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50 | |
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51 | Map<ISequence, double[]> smellingTasks = |
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52 | getInefficientActionStatistics(taskModel.getTasks()); |
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53 | |
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54 | analyzeTasksWithInefficientActions(smellingTasks, results, taskModel); |
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55 | |
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56 | return results; |
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57 | } |
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58 | |
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59 | /** |
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60 | * |
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61 | */ |
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62 | private void analyzeTasksWithInefficientActions(Map<ISequence, double[]> smellingTasks, |
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63 | UsabilityEvaluationResult results, |
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64 | ITaskModel taskModel) |
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65 | { |
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66 | |
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67 | for (Map.Entry<ISequence, double[]> entry : smellingTasks.entrySet()) { |
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68 | DescriptiveStatistics stats = new DescriptiveStatistics(entry.getValue()); |
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69 | |
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70 | int ratio = (int) (1000 * stats.getMean()); |
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71 | |
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72 | UsabilitySmellIntensity severity = |
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73 | UsabilitySmellIntensity.getIntensity(ratio, entry.getKey(), taskModel); |
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74 | |
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75 | if (severity != null) { |
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76 | Map<String, Object> parameters = new HashMap<String, Object>(); |
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77 | parameters.put("task", entry.getKey()); |
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78 | parameters.put("ratio", (ratio / 10)); |
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79 | |
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80 | results.addSmell(entry.getKey(), severity, |
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81 | UsabilitySmellDescription.INEFFICIENT_ACTIONS, parameters); |
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82 | } |
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83 | } |
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84 | } |
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85 | |
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86 | /** |
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87 | * |
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88 | */ |
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89 | private Map<ISequence, double[]> getInefficientActionStatistics(Collection<ITask> tasks) { |
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90 | Map<ISequence, double[]> inefficientActionRatios = new HashMap<ISequence, double[]>(); |
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91 | |
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92 | for (ITask task : tasks) { |
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93 | if (task instanceof ISequence) { |
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94 | if (countEfficientActions((ISequence) task) > 1) { |
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95 | double[] ratios = getRatiosOfInefficientActionsInInstances((ISequence) task); |
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96 | |
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97 | for (int i = 0; i < ratios.length; i++) { |
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98 | if (ratios[i] > 0) { |
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99 | // there is at least on inefficient action |
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100 | inefficientActionRatios.put((ISequence) task, ratios); |
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101 | break; |
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102 | } |
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103 | } |
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104 | } |
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105 | } |
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106 | } |
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107 | |
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108 | return inefficientActionRatios; |
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109 | } |
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110 | |
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111 | /** |
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112 | * |
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113 | */ |
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114 | private int countEfficientActions(ISequence task) { |
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115 | final List<IEventTask> efficientActions = new LinkedList<>(); |
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116 | |
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117 | task.accept(new DefaultTaskTraversingVisitor() { |
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118 | @Override |
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119 | public void visit(IEventTask eventTask) { |
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120 | if (!ActionClassifier.isInefficient(eventTask)) { |
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121 | efficientActions.add(eventTask); |
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122 | } |
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123 | } |
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124 | }); |
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125 | |
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126 | return efficientActions.size(); |
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127 | } |
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128 | |
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129 | /** |
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130 | * |
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131 | */ |
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132 | private double[] getRatiosOfInefficientActionsInInstances(ISequence sequence) { |
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133 | Collection<ITaskInstance> instances = sequence.getInstances(); |
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134 | |
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135 | double[] ratios = new double[instances.size()]; |
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136 | int index = 0; |
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137 | for (ITaskInstance instance : instances) { |
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138 | ratios[index++] = getRatioOfInefficientActionsInInstance(instance); |
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139 | } |
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140 | |
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141 | return ratios; |
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142 | } |
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143 | |
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144 | /** |
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145 | * |
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146 | */ |
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147 | private double getRatioOfInefficientActionsInInstance(ITaskInstance instance) { |
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148 | final int[] count = new int[2]; |
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149 | count[0] = 0; |
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150 | count[1] = 0; |
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151 | |
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152 | instance.accept(new DefaultTaskInstanceTraversingVisitor() { |
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153 | @Override |
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154 | public void visit(IEventTaskInstance eventTaskInstance) { |
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155 | if (ActionClassifier.isInefficient(eventTaskInstance.getEvent())) { |
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156 | count[0]++; |
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157 | } |
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158 | |
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159 | count[1]++; |
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160 | } |
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161 | |
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162 | }); |
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163 | |
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164 | return (double) count[0] / count[1]; |
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165 | } |
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166 | |
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167 | } |
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